Using Portland Cement for rocks?

[Quartermain]

I wonder if anyone in this forum has any experience using cement either for backgrounds or artificial rocks in their planted aquariums?

I have found a few articles on how to use Portland Cement for artificial rocks. But I have a concern that it might increase the water's pH and hardness and limit the plants I can grow.

Is there a way to cure Portland Cement so that it becomes mostly inert?

Or is there another material I can use that is more suitable for freshwater planted aquariums?

Thanks for any info!

[Fishman07]

I would try posting this in the DIY section!! But Idk that much about cement?? Sorry but good luck!!!

[sundevil_brian]

There is a way to cure it but it will take about a month. there is a looooong thread on it over on reefcentral for man made liverock which is basicaly portland with other stuff added. here is a link

http://reefcentral.com/forums/showthread.php?s=&threadid=1156212